Hi TerraForum,
The problem happens because of the
RadToolBar intagration with the
ASP.NET validation mechanism. There is a flicker, that happens when validation is disabled for a button. You can overcome this by adding the validators to the
UpdatedControls collection of the
AjaxSetting. Please, find attached a demo page.
Let me know if I am missing something.
Kind regards,
Erjan Gavalji
the Telerik team
Check out
Telerik Trainer, the state of the art learning tool for Telerik products.